p'shall
A lazy person's way of saying 'whatever' with a hand gesture. You use it when someone is full of crap and you’re too tired to confront them.
'P'shall?' I said, flopping my hand. 'You said you'd finish your homework. You're still eating cereal for dinner.'
She did the p'shall. 'Whatever. I'm still getting the last slice.'
He gave me the p'shall. 'You're telling me you flunked the test and still think you're cool?'